We already know that David Fincher‘s Gone Girl will be slightly different than author Gillian Flynn‘s original novel — at least, different when it comes to some third act tweaks — but that doesn’t mean that the filmmaker and writer have abandoned all the stuff that made the bestelling tale of a missing wife (Rosamund Pike) and her maybe-guilty husband (Ben Affleck) so good. That would be, in simple terms, really stupid. Most of our looks at the film so far — and there have been plenty, thanks to two juicy trailers — have focused on the film’s basic premise, which sounds like an obvious thing to do, but one that doesn’t exactly reflect the twisting and twisted nature of Flynn’s book. Yes, Amy Elliott Dunne (Pike) is missing, but no, this isn’t a film about a husband (Affleck) who offs his wife and tries to get away with it (and, no, that’s really not a spoiler). The latest trailer for the film finally starts layering on the creepy, weird mystery that starts to seep through in Flynn’s novel somewhere around the hundred page mark, and it just doesn’t let up. Basically, for people who loved the book, this is catnip (and assurance that the final film won’t be too far off the mark from the original). Let’s break it down.